CN201843821U - Radial guide vane of sectional multi-stage centrifugal pump - Google Patents
Radial guide vane of sectional multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN201843821U CN201843821U CN2010206006189U CN201020600618U CN201843821U CN 201843821 U CN201843821 U CN 201843821U CN 2010206006189 U CN2010206006189 U CN 2010206006189U CN 201020600618 U CN201020600618 U CN 201020600618U CN 201843821 U CN201843821 U CN 201843821U
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- guide vane
- centrifugal pump
- bend
- area
- slope
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Abstract
The utility model relates to a radial guide vane of a sectional multi-stage centrifugal pump, which comprises a spiral line portion, a diffusion section portion, a bent portion and a return guide vane portion. The area of an outlet of the spiral line portion is equal to the axial area of the bend portion, and a slope is disposed at an outlet of the bent portion and realizes uniform change of the area from the outlet of the spiral line portion to an outlet of the return guide vane portion. Compared with the prior art, the radial guide vane adopts the slope, after liquid flow flows through the slope, flow rate of the liquid flow uniformly changes and the flow direction of the liquid flow changes slowly, hydraulic loss due to sudden change of the flow direction is reduced, hydraulic performance of the guide vane is greatly improved, and the efficiency of the guide vane can be improved by 1% to 2% according to tests.
Description
Technical field
The utility model relates to a kind of centrifugal pump stator, especially relates to a kind of multistage sectional centrifugal pump radial stator.
Background technique
In the multistage segmental type pump, the liquid that comes out from impeller leans on stator to collect and be transported to the import of next stage impeller.In multistage segmental type pump, adopt radial stator and flow channel type guide blade at present more, and wherein common with the radial stator.The radial stator is made up of guide vane, bend and return guide vane three parts.
Conventional radial stator as shown in Figure 1.Guide vane comprises helix part 1 (AB section among Fig. 1) and diffuser part 2 (BC section among Fig. 1).The effect of bend part 3 (CD section among Fig. 1) is to change the direction of liquid stream.Return guide vane part 4 (DE section among Fig. 1) is to make the liquid that comes out from bend flow graph next stage impeller inlet equably.
Bend is partly to add the space that wall thickness forms later on naturally according to guide vane in this design method, though such design method is simple, also has very big defective:
(1) there is the sectional area sudden change in guide vane helix part with bend part joint (C place), and liquid stream is undergone mutation through speed herein, causes hydraulic loss, thus the efficient of reduction pump;
(2) because bend is partly to add wall thickness by the guide vane helix to form naturally later, the direction of liquid stream is inconsistent in liquid flow path direction in the guide vane helix part and the bend, so not being rule, the flow channel shape of bend do not change, and a big step arranged, so have bigger hydraulic loss more greatly owing to flow to change behind the liquid stream process bend, thereby reduce the efficient of pump.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of hydraulic performance that improves stator, the higher multistage sectional centrifugal pump radial stator of stator efficient for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of multistage sectional centrifugal pump radial stator, this stator comprise helix part, diffuser part, bend part and return guide vane part, it is characterized in that, the outlet port area of described helix part equates with the axial area of bend part.
The outlet port of described bend part is provided with a slope, and this slope makes the area even variation of runner from the helix section port to return guide vane part inlet.
The angle in the outlet port of the outlet port of described helix part and bend part is 45 °.
Compared with prior art, the utility model is owing to adopt the slope, and liquid flows through behind the ramp, the flow velocity even variation flows to slowly variation, has reduced by flowing to the hydraulic loss that sudden change brings, improved the hydraulic performance of stator greatly, through test, the efficient of stator can improve 1%～2%.
Description of drawings
Fig. 1 is the partial structurtes schematic representation of conventional radial stator;
Fig. 2 is a partial structurtes schematic representation of the present utility model;
Fig. 3 be among Fig. 2 K to the partial structurtes schematic representation that launches.
1 is that helix part, 2 is that diffuser part, 3 is that bend part, 4 is the return guide vane part among the figure.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
A kind of multistage sectional centrifugal pump radial stator, its structure as shown in Figure 2, this stator comprises helix part 1, diffuser part 2, bend part 3 and return guide vane part 4, the utility model has reduced the axial area of bend part 2, it is the part that abc constitutes among Fig. 2, its area with guide vane helix part 1 outlet port is equated or approaching equating, the area portions that utilization reduces, set up a slope, be the part that cd constitutes among Fig. 2, make the outlet port of runner, to the area even variation of return guide vane part 4 inlets from guide vane helix part 1, eliminate the sudden change of liquid flowing speed, reduce hydraulic loss.The angle in the outlet port of the outlet port of helix part 1 and bend part 3 is 45 °.The foundation on slope, the flow direction that makes liquid stream by stator tangentially to radially slowly changing, reduced by flowing to the hydraulic loss that sudden change brings.
Claims (2)
1. multistage sectional centrifugal pump radial stator, this stator comprise helix part, diffuser part, bend part and return guide vane part, it is characterized in that, the outlet port area of described helix part equates with bend axial area partly.
2. a kind of multistage sectional centrifugal pump radial stator according to claim 1 is characterized in that, the outlet port of described bend part is provided with a slope that makes the area even variation of runner from the helix section port to return guide vane part inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206006189U CN201843821U (en) | 2010-11-10 | 2010-11-10 | Radial guide vane of sectional multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206006189U CN201843821U (en) | 2010-11-10 | 2010-11-10 | Radial guide vane of sectional multi-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843821U true CN201843821U (en) | 2011-05-25 |
Family
ID=44038713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206006189U Expired - Fee Related CN201843821U (en) | 2010-11-10 | 2010-11-10 | Radial guide vane of sectional multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843821U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511326A (en) * | 2012-06-15 | 2014-01-15 | 上海连成（集团）有限公司 | Novel guide vane for horizontal type multi-stage pump |
| CN104564694A (en) * | 2014-12-26 | 2015-04-29 | 江苏大学 | Compact axial flow pump |
| CN105673554A (en) * | 2016-01-07 | 2016-06-15 | 江苏大学 | Reversed spiral line type guide vane of nuclear main pump and design method of reversed spiral line type guide vane |
-
2010
- 2010-11-10 CN CN2010206006189U patent/CN201843821U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511326A (en) * | 2012-06-15 | 2014-01-15 | 上海连成（集团）有限公司 | Novel guide vane for horizontal type multi-stage pump |
| CN104564694A (en) * | 2014-12-26 | 2015-04-29 | 江苏大学 | Compact axial flow pump |
| CN105673554A (en) * | 2016-01-07 | 2016-06-15 | 江苏大学 | Reversed spiral line type guide vane of nuclear main pump and design method of reversed spiral line type guide vane |
| CN105673554B (en) * | 2016-01-07 | 2018-02-27 | 江苏大学 | The backpitch line stator and its design method of one seed nucleus main pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20111110 |